And table f.3 . if any test fails, Troubleshooting & repair, Switch board test (cont.) – Lincoln Electric INVERTEC V300-PRO SVM105-B User Manual
Page 58
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V300-PRO
TROUBLESHOOTING & REPAIR
F-28
F-28
SWITCH BOARD TEST (CONT.)
Apply Positive Apply Negative
Test Prove to
Test Probe to
Terminal
Terminal
Test Result
Conclusion Repair Action
Next Procedure Notes
12
401/403
Greater than
OK
None
Continue
1K ohm
Less than
Shorted
Replace both
Snubber Test
100 ohms
Switch Boards
401/403
12
Less than
OK
None
Continue
100 ohms
Greater than
Open
Replace both
Snubber Test
1K ohm
Switch Boards
9
402/404
Less than
OK
None
Continue
100 ohms
Greater than
Open
Replace both
Snubber Test
1K ohm
Switch Boards
402/404
9
Greater than
OK
None
Continue
1K ohm
Less than
Shorted
Replace both
Snubber Test
100 ohms
Switch Boards
TABLE F.3
SWITCH BOARD RESISTANCE CHECKS
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